Inspection Procedure

1. Connect the hand-held tester to the DLC3.
2. Turn the power switch ON (IG).
3. Turn the hand-held tester ON
4. On the hand-held tester, enter the following menus: DIAGNOSIS / OBD/MOBD / CODES (All).
5. Read and record CAN communication malfunction DTCs.

Result: 

HINT:

• When DTCs other than CAN communication malfunction DTCs are output simultaneously, first correct the CAN communication problem, and then perform troubleshooting for other DTCs.
• DTC P3108 (INF 594) is one of the DTCs that indicates a CAN communication malfunction.

1. B: GO TO CAN COMMUNICATION SYSTEM (See  DIAGNOSTIC TROUBLE CODE CHART  ) 
2. A: GO TO NEXT STEP 

1. Check connection condition of each connector of the HV control ECU, ECM and battery ECU, as well as contact condition of each terminal shown in the table below.
   SYMBOLS CHART
   
   

   Type of ECU	Terminal No.	Symbols
   HV control ECU	H16-7	+B1
   HV control ECU	H16-6	+B2
   HV control ECU	H14-8	CANH
   HV control ECU	H14-9	CANL
   ECM	E6-31	CANH
   ECM	E6-30	CANL
   Battery	ECU B11-18	CANH
   Battery ECU	B11-19	CANL

   Fig 1: Identifying HV Control ECU Connector

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   OK: Connectors have been connected securely and there is no poor contact on each terminal. 

   Fig 2: Identifying E6 ECU Connector

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   Fig 3: Identifying B11 Battery ECU Connector

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

1. NG: CONNECT SECURELY 
2. OK: GO TO NEXT STEP 

CHECK FOR INTERMITTENT PROBLEMS (See  CHECK FOR INTERMITTENT PROBLEMS   )